Side by Side

Bonito / Atlantic Sarda sarda

Typical: 16–24 in, 2–8 lb

Quickest tell: Straight slanted dark stripes on the back plus small visible teeth distinguish bonito from the toothless, scribble-backed, belly-spotted false albacore; bonito is striped where Spanish mackerel is spotted.

• straight, slanting dark oblique stripes along the back, angling down onto the upper sides
• stripes are linear and well-defined (not wavy scribbles)
• small but visible conical teeth in the jaws
• compact tuna-shaped body with finlets and a slim keeled tail base
• metallic blue back, bright silver sides

Full Bonito / Atlantic guide — season, gear and rules →

Spanish Mackerel Scomberomorus maculatus

Typical: 14–22 in, 1–3 lb

Key field mark: Golden-yellow oval spots plus a black front patch on the first dorsal fin and an evenly sloping lateral line separate Spanish from the spot-poor king mackerel.

• Greenish back, silver sides with round golden-yellow spots (no stripes)
• Front third of first dorsal fin jet black
• Lateral line slopes gently to the tail, no abrupt dip
• Forked tail; row of finlets behind dorsal and anal fins
• Adults rarely exceed a few pounds (much smaller than king)

Full Spanish Mackerel guide — season, gear and rules →

When Each Is Running July — current month highlighted

Where Bonito / Atlantic and Spanish Mackerel Overlap

Both run in Northeast — that is where telling them apart actually matters.

← All fish species